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Superconductivity at the LaAlO3/SrTiO3 interface

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Published in Journal of Physics. Condensed Matter. 2009, vol. 21, no. 16, p. 164213
Abstract We report on the structural characterization of LaAlO3/SrTiO3 interfaces and on their transport properties. LaAlO3 films were prepared using pulsed laser deposition onto TiO2 terminated (001) SrTiO3 substrates inducing a metallic conduction at the interface. Resistance and Hall effect measurements reveal a sheet carrier density between 0.4 and 1.2 x 10(14) electrons cm(-2) at room temperature and a mobility of similar to 300 cm(2) V-1 s(-1) at low temperatures. A transition to a superconducting state is observed at a temperature of similar to 200 mK. The superconducting characteristics display signatures of 2D superconductivity.
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Research group Groupe Triscone
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GARIGLIO, Stefano et al. Superconductivity at the LaAlO3/SrTiO3 interface. In: Journal of Physics. Condensed Matter, 2009, vol. 21, n° 16, p. 164213. https://archive-ouverte.unige.ch/unige:114274

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Deposited on : 2019-02-13

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